Selective magnification by exchanging or adding a lens component

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359672000

Selective magnification by exchanging or adding a lens component

33

20110194189

IMAGE PICKUP LENS, IMAGE PICKUP APPARATUS, AND CONTROL METHOD OF THE IMAGE PICKUP APPARATUS - An image pickup lens includes an optical system that includes a magnification variable lens used for a magnification variation, and a focus lens configured to adjust an in-focus state, a wide attachment lens being configured to change an enlargement ratio of the image pickup lens and attachable to the optical system, and a manipulator manipulated so as to instruct driving of the magnification variable lens. A moving amount of the magnification variable lens per a predetermined manipulated amount of the manipulator when the wide attachment lens is attached is smaller than that when the wide attachment lens is not attached.

08-11-2011

20110222164

LENS SYSTEM AND PHOTOGRAPHING APPARATUS HAVING THE SAME - A lens system and a photographing apparatus including the lens system are provided, the lens system including a first sub lens system that includes a plurality of lens groups, and a second sub lens system that includes a replacement lens group that replaces or is replaced by some of the plurality of lens groups.

ZOOM LENS SYSTEM AND IMAGE PICKUP APPARATUS INCLUDING THE SAME - Provided is a zoom lens including a focus lens portion, a zoom portion, an aperture stop, and a relay portion that does not move for zooming but comprises a negative fourth-first unit, a fourth-second unit interchangeable for an optical path, a positive fourth-third unit, and a fourth-fourth unit insertable for the optical path for shifting a focal length range of an entire system to a long focal length side after removing the fourth-second unit from the optical path, and a distance on an optical axis between the aperture stop and a last lens surface of the fourth-fourth unit in a state of inserting the fourth-fourth unit in the optical path, a distance on the optical axis between a first lens surface and the last lens surface of the fourth-fourth unit, and an aperture diameter in an opened state of the aperture stop satisfy a predetermined conditions.

12-11-2014

20100097707

DUAL LENS OPTICAL SYSTEM AND DIGITAL CAMERA MODULE INCLUDING THE SAME - A dual lens optical system including a first optical system and a second optical system includes at least one reflection member to selectively redirect object lights in first and second directions toward a photographing device. The first optical system includes, in order from an object to the photographing device along the optical axis, a first lens group comprising a first reflection member, a second lens group having a negative refractive power, a third lens group having a positive refractive power, a fourth lens group having a positive refractive power, and a fifth lens group having a positive refractive power. The second optical system shares at least one optical element with the first optical system.

04-22-2010

20140078594

SMARTPHONE LENS ASSEMBLY - A lens assembly for a smartphone and a method of use is disclosed. In a first aspect, a lens assembly comprises a rotatable wheel; wherein the wheel includes at least two lenses. The lens assembly includes a skin portion coupled to the rotatable wheel, wherein the skin portion is adjustable to cover a smartphone. The at least two lenses of the wheel are positioned such that when one of the lens of the assembly is properly positioned it covers the lens of a camera on the smartphone. In a second aspect the method comprises providing a lens assembly over a camera lens of a smartphone chassis. The lens assembly includes a plurality of lenses that are rotatable. The method includes ensuring that the center of the smartphone lens is congruent with the center of the selected lens of the plurality of lens by referencing at least two surfaces of the smartphone chassis.

03-20-2014

20160124198

ASSEMBLY OF ZOOM LENS MODULE AND ZOOM IMAGING MODULE - An assembly of zoom lens module includes a main lens, plural associate lens and a rotator mechanism. The plural associated lens disposed around the mail lens and each associated lens has a shiftable lens element shifted by the rotator mechanism. When the rotator mechanism rotates, plural shiftable lens elements are shifted such that the zoom effects of the plural associate lens can be changed. Therefore, the assembly of zoom lens module may provide plentiful zoom effects without increasing the volume, particularly the total track length, and weight of the zoom lens assembly.

05-05-2016

20120019924

ZOOM LENS SYSTEM AND IMAGE PICKUP APPARATUS INCLUDING THE SAME - Provided is a zoom lens including a focus lens portion, a zoom portion, an aperture stop, and a relay portion that does not move for zooming but comprises a negative fourth-first unit, a fourth-second unit interchangeable for an optical path, a positive fourth-third unit, and a fourth-fourth unit inserteable for the optical path for shifting a focal length range of an entire system to a long focal length side after removing the fourth-second unit from the optical path, and a distance on an optical axis between the aperture stop and a last lens surface of the fourth-fourth unit in a state of inserting the fourth-fourth unit in the optical path, a distance on the optical axis between a first lens surface and the last lens surface of the fourth-fourth unit, and an aperture diameter in an opened state of the aperture stop satisfy a predetermined conditions.

01-26-2012

20120154926

ADJUSTMENT DEVICE, LENS BARREL, AND OPTICAL APPARATUS - An axis adjustment device, which may adjust an optical axis mismatch of an optical device at a high precision, and may perform an axis adjustment operation, includes a holding member to hold an optical device, a support member to support the holding member so that the holding member moves within a facing surface, a first rotating member to hold the holding member and rotatably supported around a first point S

06-21-2012

20110299174

CHANGER FOR OPTICAL ELEMENTS - A changer includes an axis of rotation for at least one optical element for at least one optical path comprising an optical axis. The changer inserts the optical element into the optical path by a rotary motion or removes it from the optical path. The optical path is one of at least two spatially connected optical paths and the axis of rotation of the changer is located between two parallel lines. The parallel lines run in a plane through the interfaces of the optical axes of the optical paths with one plane, which intersects the optical axes under the same angles and is perpendicular to the plane, which is spanned by the optical axes. The parallel lines are perpendicular to the connecting line between the two interfaces of the optical axes of the optical paths with the one plane, which intersects the optical axes under the same angles.

12-08-2011

20090073572

ZOOM LENS AND IMAGING APPARATUS - A zoom lens includes, in order along an optical axis from a side nearest to a photographic subject to an imaging site, a first lens group I that comprises a positive refraction index and is anchored in place when performing a magnification of an image, a second lens group II that comprises a negative refraction index, a third lens group III that comprises a positive refraction index, a fourth lens group IV that comprises a positive refraction index, a fifth lens group V that comprises a negative refraction index, and a sixth lens group VI that comprises a positive refraction index, wherein, when magnifying from a wide angle end to a telephoto end, the magnification thereof is performed by moving the second lens group II, the fourth lens group IV, and the fifth lens group V, at a minimum, the first lens group I comprises a reflective optical element, which is for refracting a light path therein, an additional lens group VII, comprising a negative refraction index, is interposed between the lens groups of the zoom lens as an additional lens group thereof, at a minimum, and a magnification to a long focal distance that is even longer than the telephoto end is performed thereby.

03-19-2009

20090080087

Rear converter lens apparatus and taking system comprising the same - The invention relates to a rear converter lens apparatus to obtain a lens system having a focal length longer than that of a master lens device by the mounting of the master lens device, and a taking system comprising the same. A converter lens portion consists of, in order from an object side that is the master lens device side, a first lens group of positive refracting power, a second lens group of positive refracting power and a third lens group of negative refracting power. Between the respective lens groups there is a spacing. The first and second lens groups are located such that of axial air spaces in the converter lens portion, an air space between the first lens group and the second lens group is largest. One each lens group comprises a positive lens element and a negative lens element.

03-26-2009

20080316613

EXTENDER LENS APPARATUS AND OPTICAL APPARATUS - The extender lens apparatus is detachably attached to an image-forming optical system including a first main lens unit disposed closest to an object and a second main lens unit disposed between the first main lens unit and an image plane. The apparatus includes a first extender lens unit to be inserted in a space closer to the first main lens unit than the second main lens unit, and a second extender lens unit to be inserted in a space closer to the image plane than the second main lens unit. The first extender lens unit has a magnification increasing effect. The apparatus is capable of varying a magnification of the image-forming optical system while maintaining good optical performance without greatly increasing the entire length of the image-forming optical system.

12-25-2008

359673000

To the front of a basic lens

7

20100118415

OPTICAL PLATE FOR AN IMAGING CAMERA - An optical plate for an imaging camera is proposed that is used for further deepening the depth of field. The optical plate is orthogonal to the optical axis, that, in shape, (1) is an optical plate that has the same effective aperture diameter as the imaging camera and is attached in front thereof to deepen the depth of field, and on the incidence plane or exit plane, is equipped with first and second regions in the effective aperture, the first region being on the inside (or is an outside region), with a surface shape curvature that increases going from optical axis to periphery, and a thickness that becomes thicker going from the center to the periphery, that delays the phase of transmitted light more at the periphery than the center, the second region being on the outside (or is an inside region) which has a plane parallel plate shape. Also, (2) an optical plate having a shape that is a synthesis of first and second shapes of incidence plane or exit plane, the first shape being a concave shape with a surface shape curvature that increases going from optical axis to periphery, and a thickness that becomes thicker going from the center to the periphery, that delays the phase of transmitted light more at the periphery than the center, the second shape being a convex shape with a constant surface shape curvature having the function of shifting the focal point position from long distance to the short-distance side.

05-13-2010

20130038945

WIDE-ANGLE CONVERTER LENS - A wide-angle converter lens capable of being detachably mounted on an enlargement side of an imaging lens includes a first optical element, at least one optical element having negative refractive power, and at least one optical element having positive refractive power, wherein, when an average value of relative partial dispersions of the first optical element and all optical elements of which the sign of refractive power is the same as that of the first optical element is denoted by θgF_ave, a relative partial dispersion of the first optical element is denoted by θgF, and an Abbe number of the first optical element is denoted by νd, these numerical values satisfy appropriate relationships.

02-14-2013

20110157713

Flip optic adaptor - Attachments for adjusting optical properties of image forming optical systems. An example refocus flip optic adaptor for a night vision goggle may include an adaptor housing for detachably mounting to an objective lens assembly of the night vision goggle and an optical element holder pivotably mounted to the adaptor housing such that a refocus lens (or other optical element) mounted to the optical element holder is selectively positionable in an operative position in which the refocus lens is axially aligned with the objective lens of the night vision goggle and an inoperative position in which the refocus lens and the optical element holder do not affect an image viewable through the night vision goggle. In some example embodiments, the optical element viewing diameter may be substantially the same as objective lens viewing diameter. Example optical elements may affect optical properties such as objective lens focus, optical filtering, and magnification.

06-30-2011

20150338619

OPTICAL SYSTEM AND OPTICAL LENS - An optical system, including a focusing lens group; a replaceable lens group; an optical filter; and an imaging surface. The replaceable lens group includes at least one lens and is disposed at one side of the focusing lens group facing an object space, and the at least one lens is replaceable so as to achieve the alteration of focal distance. The optical filter is disposed at one side of the focusing lens group facing the image group. The imaging surface is disposed at one side of the optical filter facing the image space.

11-26-2015

20110085245

WIDE CONVERTER LENS - A wide converter lens that is disposed on an object side of a main lens and changes the viewing angle, wherein the wide converter lens includes: a first lens having a negative refractive power, a second lens having a negative refractive power, and a third lens having a positive refractive power, wherein the first lens, the second lens, and the third lens are sequentially ordered from the object side to the image side, and the wide converter lens satisfies the following inequality:

04-14-2011

20110292518

TELECONVERTER LENS SYSTEM AND PHOTOGRAPHING APPARATUS INCLUDING THE SAME - A teleconverter lens system is attachable to or detachable from an object side of a main lens system and facilitates performing telephotographing. A photographing apparatus includes the teleconverter lens system. The teleconverter lens system includes: a first lens having a negative refractive power; a second lens having a positive refractive power; a third lens having a negative refractive power; and a fourth lens having a positive refractive power, wherein the first, second, third, and fourth lenses are sequentially arranged from an object side to an image side of the teleconverter lens system. The first and second lenses are cemented together, and the second lens has a meniscus shape in which a convex surface is formed on the object side of the second lens.

12-01-2011

20090002839

BIFOCAL IMAGING OPTICAL SYSTEM AND IMAGING APPARATUS - A configuration where a first group having a positive refractive power and a positive second group having a positive refractive power are placed sequentially from the object side is basically used. As the first group, a wide-angle first group and a telephoto first group are selectively switched over to be placed on the optical axis, thereby switching over the focal length between the wide-angle side and the telephoto side. Since the configuration in which the first group placed on the object side is switched is employed, adherence of dust or the like to the imaging surface due to the switching of the focal length can be prevented from occurring. Each group is configured by a minimum number of lenses. The whole system has a configuration which has a reduced number of lenses, and which is small and simple.

01-01-2009

359674000

To the middle of a basic lens

7

20110122505

LENS SYSTEM AND IMAGE CAPTURING DEVICE HAVING THE SAME - A lens system and an image capturing device having the same include a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, a fourth lens group having a positive refractive power, and a fifth lens group being exchangeable with the third lens group.

05-26-2011

20090303608

OPTICAL SYSTEM FOR DIGITAL CINEMA PROJECTION - The invention relates to an optical system for the projection of digital image data comprising a fixed focal length lens and a pivotable focal length extender. The principal field of application of the invention is digital cinema projection, usually employing the wide-screen format 1.9:1 or the Cinemascope format 2.37:1 (width:height). For format changeover during projection, two different fixed focal lengths are realized by the insertion or removal of the focal length extender (

12-10-2009

20130308200

LENS BARREL AND IMAGE PICKUP APPARATUS - A lens barrel includes a fixed cylinder configured to hold a plurality of lens units that constitute a main optical system, an extender configured to be rotatably held by the fixed cylinder and disposed between the plurality of lens units, a first shaft configured to rotate the extender around a first axis that is parallel to an optical axis of the main optical system so that the extender is inserted into or retracted from an optical path of the main optical system, a second shaft configured to rotate around a second axis that is parallel to the optical axis so as to transmit a rotation to the first shaft, and an exterior member attached to the fixed cylinder, the second shaft is attached to the exterior member, the exterior member is attached to the fixed cylinder, and the rotation of the second shaft is transmitted to the first shaft.

11-21-2013

20130163092

Endoscope Objective Optical System - Provided is an endoscope objective optical system that allows close-up observation while ensuring sufficient image brightness. Provided is an endoscope objective optical system consisting of a front group, an aperture stop, and a back group disposed in order from an object side; and a meniscus lens that can be inserted in and removed from an optical path between the aperture stop and the front group or the back group, with a convex surface thereof facing the aperture stop side.

06-27-2013

20140133035

LENS BARREL AND OPTICAL APPARATUS - A lens barrel includes an image-pickup optical system that includes a main optical system and an extender optical system, an extender barrel configured to hold the extender optical system, a housing configured to house the extender barrel, a rotator configured to hold the extender barrel to rotatably support the extender barrel in the housing, to insert the extender optical system into the main optical system, and to retreats the extender optical system from the main optical system, and a retreat restraint. When the retreat restraint is in the first state, the extender optical system is retreated to a position which is not associated with formation of the optical image, but the extender optical system is undetachable from the rotator, and when the retreat restraint is in the second state, the extender optical system is detachable from the rotator.

05-15-2014

20120224269

ZOOM LENS AND IMAGE PICKUP APPARATUS INCLUDING THE SAME - A zoom lens includes, in order from an object side to an image side, a first lens unit having a positive refractive power, which does not move for zooming, a second lens unit having a negative refractive power, which moves during zooming, a third lens unit having a negative refractive power, which moves during zooming, an aperture stop, and a fourth lens unit having a positive refractive power, which does not move for zooming. The fourth lens unit includes a first lens sub-unit, a focal length conversion optical system configured to be inserted into or removed from an optical path, and a second lens sub-unit. A focal length of the second lens sub-unit, a distance from the aperture stop to a lens surface at the most object side of the second lens sub-unit, and an F-number of the entire zoom lens at a wide-angle end are appropriately set.

09-06-2012

20090015935

Multi-magnification viewing and aiming scope - A multi-magnification viewing and aiming scope includes a first imaging group including an objective lens lying on the optical path and an eyepiece lens lying on the optical path. The first imaging group forms a first image having a first magnification on the optical path at an image location. A second imaging lens group may be controllably inserted into the optical path between at least some elements of the objective lens and the eyepiece lens. Upon insertion of the second imaging lens group into the optical path an optical combination of the first imaging group and the second imaging lens group forms a second image having a second magnification on the optical path at substantially the image location. The insertion may be accomplished by a tumbler mechanism upon which the second imaging lens group is mounted. The tumbler mechanism controllably pivots the second imaging lens group about a tumbler axis perpendicular to the optical path, between inserted and non-inserted positions.

01-15-2009

359675000

To the rear of a basic lens

6

20110080647

REAR ATTACHMENT LENS AND IMAGING OPTICAL SYSTEM INCLUDING THE SAME - A rear attachment lens detachably attached to a main lens system at an image side thereof to lengthen a focal length includes a negative lens disposed such that, when L is a distance between a lens surface closest to an object side and a lens surface closest to an image side in the rear attachment lens, the negative lens is within an area in which a distance from the lens surface closest to the object side to the negative lens is in the range of 0.5L to 1.0L. When νdn1 is an Abbe number of a material of the negative lens with respect to the d-line and θgFn1 is a partial dispersion ratio of the material of the negative lens with respect to the g-line and the F-line, the following conditions are satisfied:

04-07-2011

20110141573

REAR ATTACHMENT LENS AND IMAGE-FORMING OPTICAL SYSTEM USING THE SAME - A rear attachment lens detachably attached to an image side of a main lens system to change a focal length of an entire system so as to become longer than a focal length of the main lens system includes one or more positive lenses GMp. One among the one or more positive lenses GMp is a positive lens P

06-16-2011

20150346465

REAR ATTACHMENT LENS - A rear attachment lens changes a focal-length of an entire lens-system, in which the rear attachment lens has been attached to a main-lens, to a longer focal-length-side than a focal-length of the main-lens by being attached to an image-side of the main-lens. The rear attachment lens consists essentially of a first-lens-group and a second-lens-group in this order from an object-side. The first-lens-group consists essentially of a negative lens and a positive lens in this order from the object-side. The second-lens-group consists essentially of at least one negative lens and at least one positive lens, and a lens closest to an image-side in the second lens-group is a positive lens. When an Abbe number for d-line and a partial dispersion ratio between g-line and F-line of the negative lens in the first-lens-group are νd1 and θgF1, respectively, conditional expression (1): νd1>62 and conditional expression (2): 0.64

12-03-2015

20100091380

SWITCHABLE MAGNIFICATION LENS AND PHOTOGRAPHIC APPARATUS HAVING THE SAME - A switchable magnification lens used to vary the magnification of an image going to be captured by a camera. The switchable magnification lens includes an outer barrel and a switchable magnification unit detachably arranged in the outer barrel and connected to the zoom lens. The image will be magnified while passing through the switchable magnification unit from a first end to a second end, and the image will be shrunk while passing through the switchable magnification unit from the second end to the first end. The switchable magnification unit is able to change its orientation with respect to the outer barrel. The image will be magnified while the first end is away from the camera and the second end is toward the camera, and the image will be shrunk while the first end is toward the camera and the second end is away from the camera.

04-15-2010

20120099207

WIDE-ANGLE RELAY LENS AND IMAGING SYSTEM HAVING SAME - A relay lens is used for an imaging system having a main lens. The main lens has a pupil plane. The relay lens, in the order from the subject side to the image side thereof, includes a first lens of negative refractive power, and a second lens of positive refractive power. The first lens has a first principle plane and a second principle plane. The second lens has a third principle plane and a fourth principle plane. The relay lens system satisfies the following formulas: 0.53

04-26-2012

20080297913

ZOOM LENS SYSTEM - A zoom lens system includes a positive first lens group, a negative second lens group, and a rear lens group which is provided on the image side of the negative second lens group, and has a combined positive refractive power, in this order from the object; and the zoom lens system satisfies the following conditions:

12-04-2008

Patent applications in class Selective magnification by exchanging or adding a lens component

Patent applications in all subclasses Selective magnification by exchanging or adding a lens component